Post functions timeout with any body content

All of my post/put functions timed out. I though it was a complete failure of the SSR function but by chance when testing I removed the body and the response was super quick. With any body content they all time out. This is happening across all API endpoints.

Is there an easy way to debug this as all I'm currently getting is a timeout. Can I provide some kind of debug flags that will ensure greater debug output from the SSR function?

Thanks